公开(公告)号：CA2248490C

公开(公告)日：2002-08-27

申请号：CA2248490

申请日：1998-09-30

Applicant: LUCENT TECHNOLOGIES INC

Inventor： CAO QIANG ,  FREIBERG LORENZ ,  READER DAVID JONATHAN

IPC: H04B1/707 ,  H04L12/56 ,  H04W28/06 ,  H04W72/00 ,  H04W74/00 ,  H04L12/24

Abstract: The invention relates to communication systems in which end-user devices contend for access to shared resources of a channel in the communica tionsystem. End-user devices sending data in packets ove r the communication channel piggyback requests for changes in allocated resources for transmission of an other packet. A system controller changes the resource allocated to individual end -user devices depending upon the piggyback requests, in order to optimise the thro ughput of the channel. A packet switched network may thus act like a circuit switch ed network if required.

公开(公告)号：CA2248515C

公开(公告)日：2003-04-15

申请号：CA2248515

申请日：1998-09-30

Applicant: LUCENT TECHNOLOGIES INC

Inventor： CAO QIANG ,  BADEN CHARLOTTE CATHERINE ELIZ ,  FREIBERG LORENZ ,  READER DAVID JONATHAN

IPC: H04B7/212 ,  H04B7/216 ,  H04J3/00 ,  H04J3/02 ,  H04J3/24 ,  H04L12/56 ,  H04L29/10 ,  H04M1/00 ,  H04W74/00 ,  H04W74/04 ,  H04W80/00 ,  H04W84/04 ,  H04W99/00 ,  H04Q7/36

Abstract: The invention relates to mobile cellular communication systems in which asymmetric access to a time division duplex (TDD) communication channel is p rovided. The channel is divided (by TDD) into slots which are allocated to either upl ink communication or downlink communication by the base station in each cell. Ti ming of slots, and thus of compulsory uplink and downlink slots, is co-ordinated acr oss the cells of a system.

公开(公告)号：CA2248490A1

公开(公告)日：1999-04-30

申请号：CA2248490

申请日：1998-09-30

Applicant: LUCENT TECHNOLOGIES INC

Inventor： FREIBERG LORENZ ,  READER DAVID JONATHAN ,  CAO QIANG

IPC: H04B1/707 ,  H04L12/56 ,  H04W28/06 ,  H04W72/00 ,  H04W74/00 ,  H04L12/24

Abstract: The invention relates to communication systems in which end-user devices contend for access to shared resources of a channel in the communication system. End-user devices sending data in packets over the communication channel piggyback requests for changes in allocated resources for transmission of anothe r packet. A system controller changes the resource allocated to individual end-use r devices depending upon the piggyback requests, in order to optimise the throughp ut of the channel. A packet switched network may thus act like a circuit switched network if required.

公开(公告)号：CA2248487C

公开(公告)日：2002-01-15

申请号：CA2248487

申请日：1998-09-30

Applicant: LUCENT TECHNOLOGIES INC

Inventor： FREIBERG LORENZ ,  READER DAVID JONATHAN ,  CAO QIANG

IPC: H04B7/26 ,  H04B7/005 ,  H04B15/00 ,  H04Q7/22

Abstract: The invention relates to power control mechanisms for controlling signal strength in a mobile wireless communication systems which communicate, at le ast initially, over different channels. By measuring the Signal-to-Interference ratio in signals received by a receiving station and returning that information to th e transmitting station, an indication of appropriate power levels at which to transmit subs equent signals is given.

公开(公告)号：CA2248515A1

公开(公告)日：1999-04-30

申请号：CA2248515

申请日：1998-09-30

Applicant: LUCENT TECHNOLOGIES INC

Inventor： BADEN CHARLOTTE CATHERINE ELIZ ,  CAO QIANG ,  READER DAVID JONATHAN ,  FREIBERG LORENZ

IPC: H04B7/212 ,  H04B7/216 ,  H04J3/00 ,  H04J3/02 ,  H04J3/24 ,  H04L12/56 ,  H04L29/10 ,  H04M1/00 ,  H04W74/00 ,  H04W74/04 ,  H04W80/00 ,  H04W84/04 ,  H04W99/00 ,  H04Q7/36

Abstract: The invention relates to mobile cellular communication systems in which asymmetric access to a time division duplex (TDD) communication channel is provi ded. The channel is divided (by TDD) into slots which are allocated to either uplink communication or downlink communication by the base station in each cell. Timing of slots, and thus of compulsory uplink and downlink slots, is co-ordinated across the cells of a system.

公开(公告)号：CA2248487A1

公开(公告)日：1999-04-30

申请号：CA2248487

申请日：1998-09-30

Applicant: LUCENT TECHNOLOGIES INC

Inventor： READER DAVID JONATHAN ,  FREIBERG LORENZ ,  CAO QIANG

IPC: H04B7/26 ,  H04B7/005 ,  H04B15/00 ,  H04Q7/22

Abstract: The invention relates to power control mechanisms for controlling signal strength in a mobile wireless communication systems which communicate, at least initially, over different channels. By measuring the Signal-to-Interference rati o in signals received by a receiving station and returning that information to the tr ansmitting station, an indication of appropriate power levels at which to transmit subseque nt signals is given.